2010/1/14 Pavel Stehule <pavel.stehule@gmail.com>:
> 2010/1/14 Vincenzo Romano <vincenzo.romano@notorand.it>:
>> 2010/1/14 Adrian Klaver <adrian.klaver@gmail.com>:
>>> On Wednesday 13 January 2010 10:19:57 pm Vincenzo Romano wrote:
...
>> CREATE OR REPLACE FUNCTION f()
>> RETURNS VOID
>> LANGUAGE plpgsql
>> AS $function$
>> DECLARE
>> cmd TEXT;
>> BEGIN
>> EXECUTE '
>> SELECT $l0$ALTER TABLE test ALTER COLUMN i SET DEFAULT $1 $l0$
>> ' INTO cmd USING 42;
>> RAISE INFO '%',cmd;
>> END;
>> $function$
>>
>> SELECT f();
>> INFO: ALTER TABLE test ALTER COLUMN i SET DEFAULT $1
>>
>> The command to be executed is DML (SELECT). The substitution doesn't take place.
>
> yes. You cannot call SELECT 'ALTER ...'
SELECT 'ALTER ...' is to select a text string into a variable!
You mean the parse will give a look into my constant string to see
whether I'm trying to build a dynamic DDL command?
This would be awesome!
--
Vincenzo Romano
NotOrAnd Information Technologies
NON QVIETIS MARIBVS NAVTA PERITVS
